import json
from datetime import timedelta

from discord import ButtonStyle, Interaction, Message, ui
from redbot.core import commands

from ..utilities.database import connect, create_guild_table, mysql_log


class ImportGalacticBotView(ui.View):
    def __init__(self, timeout, ctx, message):
        super().__init__()
        self.ctx: commands.Context = ctx
        self.message: Message = message

    @ui.button(label="Yes", style=ButtonStyle.success)
    async def import_button_y(self, interaction: Interaction, button: ui.Button): # pylint: disable=unused-argument
        await self.message.delete()
        await interaction.response.send_message("Deleting original table...", ephemeral=True)

        database = connect()
        cursor = database.cursor()

        query = f"DROP TABLE IF EXISTS moderation_{self.ctx.guild.id};"
        cursor.execute(query)

        cursor.close()
        database.commit()

        await interaction.edit_original_response(content="Creating new table...")

        await create_guild_table(self.ctx.guild)

        await interaction.edit_original_response(content="Importing moderations...")

        accepted_types = [
            'NOTE',
            'WARN',
            'MUTE',
            'UNMUTE',
            'KICK',
            'SOFTBAN',
            'BAN',
            'UNBAN',
            'SLOWMODE',
            'LOCKDOWN'
        ]

        file = await self.ctx.message.attachments[0].read()
        data = sorted(json.loads(file), key=lambda x: x['case'])

        failed_cases = []

        for case in data:
            if case['type'] not in accepted_types:
                continue

            timestamp = round(case['timestamp'] / 1000)

            try:
                if case['duration'] is not None and float(case['duration']) != 0:
                    duration = timedelta(seconds=round(float(case['duration']) / 1000))
                else:
                    duration = 'NULL'
            except OverflowError:
                failed_cases.append(case['case'])
                continue

            metadata = {
                'imported_from': 'GalacticBot'
            }

            if case['type'] == 'SLOWMODE':
                metadata['seconds'] = case['data']['seconds']

            if case['resolved']:
                resolved = 1
                resolved_by = None
                resolved_reason = None
                resolved_timestamp = None
                if case['changes']:
                    for change in case['changes']:
                        if change['type'] == 'RESOLVE':
                            resolved_by = change['staff']
                            resolved_reason = change['reason']
                            resolved_timestamp = round(change['timestamp'] / 1000)
                            break
                if resolved_by is None:
                    resolved_by = '?'
                if resolved_reason is None:
                    resolved_reason = 'Could not get resolve reason during moderation import.'
                if resolved_timestamp is None:
                    resolved_timestamp = timestamp
                changes = [
                    {
                    'type': "ORIGINAL",
                    'reason': case['reason'],
                    'user_id': case['executor'],
                    'timestamp': timestamp
                    },
                    {
                    'type': "RESOLVE",
                    'reason': resolved_reason,
                    'user_id': resolved_by,
                    'timestamp': resolved_timestamp
                    }
                ]
            else:
                resolved = 0
                resolved_by = 'NULL'
                resolved_reason = 'NULL'
                changes = []

            if case['reason'] and case['reason'] != "N/A":
                reason = case['reason']
            else:
                reason = "NULL"

            await mysql_log(
                self.ctx.guild.id,
                case['executor'],
                case['type'],
                case['targetType'],
                case['target'],
                0,
                str(duration),
                reason,
                timestamp=timestamp,
                resolved=resolved,
                resolved_by=resolved_by,
                resolved_reason=resolved_reason,
                changes=changes,
                metadata=metadata,
                database=database
            )

        await interaction.edit_original_response(content="Import complete.")
        if failed_cases:
            await interaction.edit_original_response(content=f"Import complete.\n*Failed to import the following cases:*\n```{failed_cases}```")

    @ui.button(label="No", style=ButtonStyle.danger)
    async def import_button_n(self, interaction: Interaction, button: ui.Button): # pylint: disable=unused-argument
        await self.message.edit(content="Import cancelled.", view=None)
        await self.message.delete(10)
        await self.ctx.message.delete(10)